pcsx2/common/include/Utilities/RwMutex.h

91 lines
2.5 KiB
C++

/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2010 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "Threading.h"
namespace Threading
{
// --------------------------------------------------------------------------------------
// RwMutex
// --------------------------------------------------------------------------------------
class RwMutex
{
DeclareNoncopyableObject(RwMutex);
protected:
pthread_rwlock_t m_rwlock;
public:
RwMutex();
virtual ~RwMutex() throw();
virtual void AcquireRead();
virtual void AcquireWrite();
virtual bool TryAcquireRead();
virtual bool TryAcquireWrite();
virtual void Release();
};
// --------------------------------------------------------------------------------------
// BaseScopedReadWriteLock
// --------------------------------------------------------------------------------------
class BaseScopedReadWriteLock
{
DeclareNoncopyableObject(BaseScopedReadWriteLock);
protected:
RwMutex& m_lock;
bool m_IsLocked;
public:
BaseScopedReadWriteLock( RwMutex& locker )
: m_lock( locker )
{
}
virtual ~BaseScopedReadWriteLock() throw();
void Release();
bool IsLocked() const { return m_IsLocked; }
};
// --------------------------------------------------------------------------------------
// ScopedReadLock / ScopedWriteLock
// --------------------------------------------------------------------------------------
class ScopedReadLock : public BaseScopedReadWriteLock
{
public:
ScopedReadLock( RwMutex& locker );
virtual ~ScopedReadLock() throw() {}
void Acquire();
};
class ScopedWriteLock : public BaseScopedReadWriteLock
{
public:
ScopedWriteLock( RwMutex& locker );
virtual ~ScopedWriteLock() throw() {}
void Acquire();
protected:
ScopedWriteLock( RwMutex& locker, bool isTryLock );
};
}